Finding the Fourth Proportional to 2,622.04, 3,618.52 and 1,443.20

Step by Step Solution

1. Step 1: Write the proportion equation
   2,622.04 : 3,618.52 = 1,443.20 : x
2. Step 2: Convert to fraction form
   2,622.04/3,618.52 = 1,443.20/x
3. Step 3: Cross multiply
   2,622.04x = 3,618.52 × 1,443.20
4. Step 4: Simplify right side
   2,622.04x = 5,222,248.06
5. Step 5: Solve for x
   x = 5,222,248.06/2,622.04
6. Step 6: Final answer
   x = 1,991.67